Question 236 · LDEK · Endodontic instruments
An endodontic instrument has a white handle, with number 15 and a circle symbol on it. What kind of instrument is it, and what is the diameter of its tip?
- A. H file, diameter 0.015 mm.
- B. H file, diameter 0.15 mm.
- C. S file, diameter 0.015 mm.
- D. S file, diameter 0.15 mm.
- E. C file, diameter 0.015 mm.
Hint
ISO numbers give the tip diameter in hundredths of a millimetre, and handle symbols identify the file design.
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